CN114837762A - S-CO 2 Coupling steam Rankine cycle power generation system and working method - Google Patents
S-CO 2 Coupling steam Rankine cycle power generation system and working method Download PDFInfo
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- CN114837762A CN114837762A CN202210423076.XA CN202210423076A CN114837762A CN 114837762 A CN114837762 A CN 114837762A CN 202210423076 A CN202210423076 A CN 202210423076A CN 114837762 A CN114837762 A CN 114837762A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/06—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using mixtures of different fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
- F01K25/103—Carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/32—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines using steam of critical or overcritical pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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Abstract
The invention discloses an S-CO 2 The invention relates to a coupling steam Rankine cycle power generation system and a working method 2 Mixed with steam and fed into a power generation turbine using S-CO 2 Mixed with water vaporElectricity is used for improving the cyclic power generation efficiency, and simultaneously, a waste heat turbine is introduced to cool the S-CO in the steam-water heat exchanger 2 Feeding into a waste heat turbine for utilizing S-CO 2 The waste heat is used for generating electricity, so that the energy utilization efficiency is greatly improved; the invention uses mixed double working media, and the volume of the whole system is larger than that of S-CO 2 The single working medium is larger, the vibration is not larger due to the over-small volume and the over-compact structure of the system, the safety and the stability of the power generation system are improved, the power generation circulation efficiency can be improved, and the safe and stable operation of the unit can be realized.
Description
Technical Field
The invention belongs to the technical field of novel efficient power generation, and particularly relates to S-CO 2 Provided are a coupling steam Rankine cycle power generation system and a working method.
Background
With the rapid development of power generation technology, in order to further improve the energy utilization efficiency and reduce the emission of environmental pollutants, some novel cycle working medium power generation technologies gradually become the focus of research. Meanwhile, the purposes of carbon peak reaching and carbon neutralization are realized for the country, and the construction of a novel power system taking new energy as a main body is very important, and the novel power generation system has the characteristics of high efficiency, flexibility, low carbon and the like. In recent years, supercritical carbon dioxide (S-CO) has been utilized 2 ) The power generation technology as a circulating working medium is widely concerned at home and abroad, has the advantages of high efficiency, cleanness, compact structure and the like, can be coupled with heat sources in various forms such as fossil energy, nuclear energy, solar energy and the like, and has very wide application prospect.
At present, most of power generation cycles of a coal burner unit are steam Rankine cycles, the power generation cycles comprise four key devices including a boiler, a steam turbine, a water feeding pump, a condenser and the like, circulating working medium water absorbs heat at a constant pressure in the boiler and becomes superheated steam, the superheated steam enters the steam turbine to do work through adiabatic expansion, steam turbine exhaust steam releases heat at the constant pressure in the condenser and becomes saturated water from wet steam, water is adiabatically compressed in the water feeding pump and becomes unsaturated water, and finally the water enters the boiler to complete the cycles.
CO 2 The chemical property is stable, non-toxic, non-flammable and non-explosive, the viscosity is low, the compressibility is close to that of incompressible fluid, the critical parameter is low (7.38MPa, 31 ℃), and the material is used as an energy transmission and power conversion working medium and has the remarkable advantages of high power density, good heat transfer performance, low price, easiness in obtaining and the like. Compared with the existing steam Rankine cycle power generation technology, the supercritical carbon dioxide (S-CO) 2 ) The power generation technology has the following advantages: (1) the circulation efficiency is high; (2) the system has small volume and compact structure; (3) the range of applicable heat sources is wide; (4) friendly to the environment and the like.
In the 50S of the 20 th century, S-CO has been proposed by researchers 2 Circulatory system, then large numbers of scholars begin to work on S-CO 2 And circularly performing theoretical and experimental research. But until now, S-CO 2 The cyclic power generation technology is not mature, and the system construction thereof has some design difficulties, namely S-CO 2 The turbine volume is greatly reduced compared with the traditional steam turbine, and the turbine has the advantages of compact equipment and quick response, but simultaneously provides great challenges for structural stress and sealing a cooling system. Furthermore, S-CO 2 There are difficulties in manufacturing the main equipment components of the circulation system and inexperienced operation of the circulation power generation system.
Aiming at the current S-CO 2 The current situation that the cyclic power generation technology is not mature enough and utilizes S-CO 2 When single working medium is used for generating power in a circulating way, the system is too small in size and too compact in structure, so that structural stress is large, further vibration is large, the safe and stable operation of a unit is influenced, and the S-CO power generation system is combined with the Rankine cycle power generation technology of the traditional steam turbine 2 Provided are a coupling steam Rankine cycle power generation system and a working method.
Disclosure of Invention
The invention aims to overcome the defects and provide S-CO 2 Coupled steam Rankine cycle power generation system and working method can improve cycle power generationThe efficiency breaks through the bottleneck of energy utilization efficiency of the existing power generation by using a single steam working medium, and the volume of the system is larger than that of the system using S-CO 2 The single working medium is larger, the vibration is not larger due to the over-small volume and the over-compact structure of the system, the safety and the stability of the power generation system are improved, the power generation circulation efficiency can be improved, and the safe and stable operation of the unit can be realized.
To achieve the above object, an S-CO 2 A steam-coupled Rankine cycle power generation system comprises a boiler and S-CO of the boiler 2 The steam extraction port of the mixed steam and the steam is connected with a power generation turbine which is connected with a generator, the mixed steam outlet of the power generation turbine is connected with a steam-water heat exchanger, and the S-CO of the steam-water heat exchanger 2 The outlet of the waste heat power generation turbine is connected with a waste heat power generator, the exhaust outlet of the waste heat power generation turbine is connected with a heater, the mixed working medium exhaust outlet of the power generation turbine is connected with a cooler, the condensed water outlet of the cooler is connected with the heater, and the S-CO of the cooler 2 Outlet connection S-CO 2 Storage tank, S-CO 2 The storage tank is connected with S-CO 2 Pretreatment device, gas outlet of heater and S-CO 2 The outlets of the pretreatment devices are connected with a main compressor, the main compressor is connected with a boiler, the liquid outlet of the heater is connected with a steam-water heat exchanger, and the liquid outlet of the steam-water heat exchanger is connected with the boiler.
S-CO 2 The pretreatment device comprises a precompressor, and the two ends of the precompressor are respectively connected with S-CO 2 The cold source side of the precooler is connected with a pipeline between the cooler and the heater.
The cooler is connected with a condensate pump, and the condensate pump is connected with the heater through a condensate pipeline.
The steam-water heat exchanger is connected with a water feeding pump, the water feeding pump is connected with the boiler through a water feeding pipeline, and the water feeding pipeline is provided with the water feeding pump.
The power generation turbine is connected with the steam-water heat exchanger through a steam extraction pipeline.
The gas outlet of the heater passes through the heater S-CO 2 The steam exhaust pipeline is connected with the main compressor.
S-CO 2 Coupled steam Rankine cycle power generationThe working method of the system comprises the following steps:
boiler production of S-CO 2 Feeding the mixed steam and the water vapor into a power generation turbine;
the power generation turbine converts heat energy into mechanical energy to drive the generator to work, the power generation turbine extracts steam from mixed steam and sends the extracted steam into the steam-water heat exchanger, and the power generation turbine discharges the steam from the mixed steam and sends the steam into the cooler;
the steam-water heat exchanger cools the cooled S-CO 2 Feeding the waste heat into a waste heat turbine;
the heat energy of the waste heat turbine is converted into mechanical energy to drive the waste heat generator to work, and the waste heat turbine sends exhaust steam into the heater;
the cooler converts S-CO 2 Separating the condensed water after releasing heat with the steam at constant pressure, sending the condensed water into a heater, and cooling the S-CO 2 Feeding S-CO 2 In the storage tank;
S-CO 2 S-CO in storage tank 2 Through S-CO 2 The pretreatment device is compressed and then cooled to ensure that S-CO is generated 2 Boosting the pressure and raising the temperature, and then sending the mixture into a main compressor;
the heater sends the heated condensed water into the steam-water heat exchanger, and the cooled S-CO is sent to the heat exchanger 2 Feeding into a main compressor;
the outlet water of the steam-water heat exchanger enters the boiler;
the main compressor feeds the compressed gas into the boiler.
S-CO 2 S-CO in storage tank 2 Compressing the mixture by a precompressor, and exchanging heat by a precooler to ensure that the S-CO is subjected to heat exchange 2 And (4) boosting the pressure and raising the temperature, then sending the water into a main compressor, and adopting the condensed water discharged by a cooler through a condensed water pump on the cold source side of the precooler.
Compared with the prior art, the steam turbine Rankine cycle power generation system is improved on the basis of the existing steam turbine Rankine cycle power generation system, and S-CO is generated by the boiler 2 Mixed with steam and fed into a power generation turbine using S-CO 2 The waste heat turbine is introduced to cool the S-CO by the steam-water heat exchanger 2 Feeding into a waste heat turbine for utilizing S-CO 2 The waste heat is used for generating electricity, so that the energy utilization efficiency is greatly improved; the invention uses mixed double working media, and the volume of the whole system is larger than that of S-CO 2 The single working medium is larger, the vibration is not larger due to the over-small volume and the over-compact structure of the system, the safety and the stability of the power generation system are improved, the power generation circulation efficiency can be improved, and the safe and stable operation of the unit can be realized.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
the system comprises a boiler 1, a boiler 2, a power generation turbine 3, a generator 4, a cooler 5, a steam-water heat exchanger 6, a waste heat power generation turbine 7, a waste heat generator 8, a heater 9 and S-CO 2 Storage tank, 10, condensate pump, 11, feed pump, 12, S-CO 2 Pretreatment device, 13, precooler, 14, precompressor, 15, main compressor, 16, steam extraction pipeline, 17 and heater S-CO 2 Steam exhaust pipeline, 18, condensed water pipeline, 19 and water supply pipeline.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
See FIG. 1, an S-CO 2 A steam-coupled Rankine cycle power generation system comprises a boiler 1 and S-CO of the boiler 1 2 A steam extraction port of the mixed steam of the water steam is connected with a power generation turbine 2, the power generation turbine 2 is connected with a generator 3, the power generation turbine 2 and the generator 3 are connected on the same rotating shaft, a mixed steam outlet of the power generation turbine 2 is connected with a steam-water heat exchanger 5, and S-CO of the steam-water heat exchanger 5 2 The outlet of the waste heat power generation turbine 6 is connected with the waste heat power generator 7, the waste heat power generation turbine 6 and the waste heat power generator 7 are connected on the same rotating shaft, the exhaust steam outlet of the waste heat power generation turbine 6 is connected with the heater 8, the mixed working medium exhaust steam outlet of the power generation turbine 2 is connected with the cooler 4, the condensed water outlet of the cooler 4 is connected with the heater 8, and the S-CO of the cooler 4 2 Outlet connection S-CO 2 Storage tank 9, S-CO 2 The storage tank 9 is connected with S-CO 2 Pretreatment device 12, gas outlet of heater 8 and S-CO 2 The outlets of the pretreatment devices 12 are connected with a main compressor 15, the main compressor 15 is connected with the boiler 1, and the liquid outlet of the heater 8 is connected with steamThe water heat exchanger 5 and the liquid outlet of the steam-water heat exchanger 5 are connected with the boiler 1 through a feed water pump 11.
S-CO 2 The pretreatment device 12 comprises a pre-compressor 14, and two ends of the pre-compressor 14 are respectively connected with S-CO 2 A storage tank 9 and a pre-cooler 13, wherein the cold source side of the pre-cooler 13 is connected with a pipeline between the cooler 4 and the heater 8 for S-CO 2 After the pressure is increased, the temperature is reduced to realize S-CO 2 The pressure is not over-heated during boosting, and the requirements of pipeline materials and operation are met.
The cooler 4 is connected with a condensate pump 10, the condensate pump 10 is connected with the heater 8 through a condensate pipeline 18, the steam-water heat exchanger 5 is connected with a water supply pump 11, and the water supply pump 11 is connected with the boiler 1 through a water supply pipeline 19. The power generation turbine 2 is connected to the steam-water heat exchanger 5 via a steam extraction line 16. The gas outlet of the heater 8 passes through the heater S-CO 2 The exhaust line 17 is connected to the main compressor 15.
S-CO 2 The working method of the coupling steam Rankine cycle power generation system comprises the following steps:
boiler 1 producing S-CO 2 The steam mixed with the steam is sent to the power generation turbine 2;
the mixed steam is adiabatically expanded in the power generation turbine 2, the heat energy is converted into mechanical energy, the mechanical energy is transmitted to the generator 3 through the rotating shaft to realize external acting power generation, the Nth stage of the power generation turbine 2, part of the mixed steam enters the steam-water heat exchanger 5 through the steam extraction pipeline 16, and the power generation turbine 2 sends the exhaust steam of the mixed steam into the cooler 4;
the steam-water heat exchanger 5 cools the cooled S-CO 2 Feeding into a waste heat turbine 6;
the waste heat turbine 6 is subjected to adiabatic expansion, heat energy is converted into mechanical energy and is transmitted to the waste heat generator 7 through the rotating shaft, and exhaust steam is sent into the heater 8 by the waste heat turbine 6;
the cooler 4 discharges S-CO 2 Separating the cooled water from the steam after releasing heat at constant pressure, firstly entering a heater 8 through a condensate pump 10, and cooling the S-CO 2 Feeding S-CO 2 In the storage tank 9;
S-CO 2 S-CO in the tank 9 2 Through S-CO 2 The pre-treatment device 12 compresses and then cools the S-CO 2 S-CO in the tank 9 2 Is compressed by a pre-compressor 14 and then is subjected to heat exchange by a pre-cooler 13, so that S-CO is obtained 2 After the pressure and temperature rise, the condensate is sent to a main compressor 15, and the condensate discharged from the cooler 4 is adopted on the cold source side of the precooler 13.
S-CO in the Heater 8 2 Heat exchange with condensed water, heating the condensed water, delivering the heated condensed water into a steam-water heat exchanger 5, and cooling the S-CO 2 Sent to the main compressor 15;
the steam-water heat exchanger 5 feeds feed water into the boiler 1 through a feed water pump 11;
the main compressor 15 compresses the compressed S-CO 2 Is fed into the boiler 1.
The water vapor from the steam extraction pipeline 16 and the water from the heater enter the steam-water heat exchanger 5 for heat exchange, and then all become liquid water, and the liquid water are converged into the water feeding pump 11 and enter the boiler 1 after adiabatic compression.
S-CO 2 And the water respectively enters the boiler 1 to absorb heat at a fixed pressure to generate high-temperature and high-pressure S-CO 2 Mixing the steam with water vapor to complete thermodynamic cycle;
S-CO 2 the heat source side of a pre-cooler 13 in the pretreatment device 12 is S-CO 2 The cold source side is condensed water, so that the S-CO is cooled by using the condensed water 2 The object of (1).
S-CO 2 The main thermodynamic parameters of the coupled steam rankine cycle power generation system are shown in table 1.
TABLE 1S-CO 2 Coupling main thermodynamic parameters of steam Rankine cycle power generation system
Claims (8)
1. S-CO 2 A coupled steam Rankine cycle power generation system is characterized by comprising a boiler (1), and the S-CO of the boiler (1) 2 The steam-steam mixed steam outlet is connected with a power generation turbine (2), the power generation turbine (2) is connected with a power generator (3), the mixed steam extraction port of the power generation turbine (2) is connected with a steam-water heat exchanger (5), and the steam-water heat exchangerS-CO of the heat exchanger (5) 2 The outlet of the waste heat power generation turbine (6) is connected with a waste heat generator (7), the steam exhaust outlet of the waste heat power generation turbine (6) is connected with a heater (8), the mixed working medium steam exhaust outlet of the power generation turbine (2) is connected with a cooler (4), the condensed water outlet of the cooler (4) is connected with the heater (8), and the S-CO of the cooler (4) is connected with the heater (8) 2 Outlet connection S-CO 2 Storage tank (9), S-CO 2 The storage tank (9) is connected with S-CO 2 A pre-treatment device (12), a gas outlet of the heater (8) and S-CO 2 The outlets of the pretreatment device (12) are connected with a main compressor (15), the main compressor (15) is connected with the boiler (1), the liquid outlet of the heater (8) is connected with a steam-water heat exchanger (5), and the liquid outlet of the steam-water heat exchanger (5) is connected with the boiler (1).
2. An S-CO according to claim 1 2 A coupled steam Rankine cycle power generation system, characterized in that S-CO 2 The pretreatment device (12) comprises a precompressor (14), and the two ends of the precompressor (14) are respectively connected with S-CO 2 The cold source side of the precooler (13) is connected with a pipeline between the cooler (4) and the heater (8).
3. An S-CO according to claim 1 2 The coupling steam Rankine cycle power generation system is characterized in that a cooler (4) is connected with a condensate pump (10), and the condensate pump (10) is connected with a heater (8) through a condensate pipeline (18).
4. An S-CO according to claim 1 2 The coupling steam Rankine cycle power generation system is characterized in that the steam-water heat exchanger (5) is connected with a feed water pump (11), and the feed water pump (11) is connected with the boiler (1) through a feed water pipeline (19).
5. An S-CO according to claim 1 2 The coupling steam Rankine cycle power generation system is characterized in that a power generation turbine (2) is connected with a steam-water heat exchanger (5) through a steam extraction pipeline (16).
6. The method of claim 1S-CO 2 Coupled steam Rankine cycle power generation system, characterized in that the gas outlet of the heater (8) is through the heater S-CO 2 The steam exhaust pipeline (17) is connected with the main compressor (15).
7. An S-CO according to claim 1 2 The working method of the coupling steam Rankine cycle power generation system is characterized by comprising the following steps of:
boiler (1) for producing S-CO 2 The mixed steam and the water vapor are sent into a power generation turbine (2);
the power generation turbine (2) converts heat energy into mechanical energy to drive the generator (3) to work, the power generation turbine (2) extracts mixed steam and sends the extracted steam into the steam-water heat exchanger (5), and the power generation turbine (2) discharges the mixed steam and sends the discharged steam into the cooler (4);
the cooled S-CO is treated by the steam-water heat exchanger (5) 2 Feeding the waste heat into a waste heat turbine (6);
the heat energy of the waste heat turbine (6) is converted into mechanical energy to drive the waste heat generator (7) to work, and the waste heat turbine (6) sends exhaust steam into the heater (8);
the cooler (4) discharges S-CO 2 Separating the condensed water after releasing heat with the steam at constant pressure, sending the condensed water into a heater (8), and cooling the cooled S-CO 2 Feeding S-CO 2 In the storage tank (9);
S-CO 2 S-CO in the storage tank (9) 2 Through S-CO 2 The pretreatment device (12) is compressed and then cooled to ensure that S-CO is generated 2 After boosting the pressure and raising the temperature, sending the mixture into a main compressor (15);
the heater (8) sends the heated condensed water into the steam-water heat exchanger (5) and cools the S-CO 2 Feeding into a main compressor (15);
outlet water of the steam-water heat exchanger (5) enters the boiler (1);
the main compressor (15) feeds the compressed gas into the boiler (1).
8. An S-CO according to claim 7 2 The working method of the coupling steam Rankine cycle power generation system is characterized in that S-CO 2 S-CO in the storage tank (9) 2 Through a precompressor (14)Compressing, and then exchanging heat through a precooler (13) to ensure that S-CO is subjected to heat exchange 2 After the pressure and the temperature are increased, the condensate is sent into a main compressor (15), and the condensate discharged by a condensate pump (10) through a cooler (4) is adopted at the cold source side of a precooler (13).
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| CN208347847U (en) * | 2018-05-18 | 2019-01-08 | 江苏大学 | A kind of organic Rankine cycle power generation system based on gas-liquid separation and twin-stage evaporation |
| CN110593977A (en) * | 2019-08-30 | 2019-12-20 | 珠海格力电器股份有限公司 | Dual-working-medium Rankine cycle waste heat power generation method and system and generator |
| CN112780373A (en) * | 2020-12-30 | 2021-05-11 | 华北电力大学（保定） | Water vapor cycle based on supercritical and subcritical heat regeneration |
| CN113090507A (en) * | 2021-04-02 | 2021-07-09 | 西安交通大学 | Combined cooling, heating and power system and method based on compressed air energy storage and organic Rankine cycle |
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